MJG wrote:I found out from the manual how to reset the footswitch to default/factory settings. I understand what it does and how to do it.

What I don't understand is the factory reset for the amp. What does this do? Is it just related to the MIDI functions?

Not sure, but I think the footswitch assignments are stored in the amp too (not in the f/s). Anyway, the factory reset applies to the footswitch settings and the MIDI programs. As with any device that can be reset to factory defaults, there are several situations where the reset may be needed: demo, new owner or simply cleaning up your own mess. [smilie=icon_lol.gif]

My buddy bought a JVM used on ebay and all the presets were turned off except OD2 with different master settings and fx loops. So basically no matter what button you stepped on you got OD2 with or without FXs.

So we had to dig into the manual to get back the factory presets, which I'm glad there was that option!!

DannyjoeCarter wrote:My buddy bought a JVM used on ebay and all the presets were turned off except OD2 with different master settings and fx loops. So basically no matter what button you stepped on you got OD2 with or without FXs.

So we had to dig into the manual to get back the factory presets, which I'm glad there was that option!!

So the amp does store the settings (too?) then??? Interesting. I thought it was just the footswitch (as the demo on the Marshall website says you can take your footswitch and plug it into another JVM and your settings will be re-called).

DannyjoeCarter wrote:My buddy bought a JVM used on ebay and all the presets were turned off except OD2 with different master settings and fx loops. So basically no matter what button you stepped on you got OD2 with or without FXs.

So we had to dig into the manual to get back the factory presets, which I'm glad there was that option!!

So the amp does store the settings (too?) then??? Interesting. I thought it was just the footswitch (as the demo on the Marshall website says you can take your footswitch and plug it into another JVM and your settings will be re-called).

Well let me clarify that; the other channels weren't able to be brought up from the footswitch. You could manually switch in the other channels, its just that all the switches were preset with only OD2. Why someone would do this I'm not sure.
But we did a reset on the footswitch because it was much easier than manually going through every channel.

As I remember, the footswitch stores all the footswitch-related presets, not the amp. The amp only stores MIDI presets.

Picture two JVMs, "A" and "B". Amp A is programmed only for footswitch presets(no MIDI programs ever put in), Amp B is only operated with a MIDI pedal and still has the factory default presets in its factory footswitch (which isn't used). Now if you take the footswitch from Amp A and hook it up to Amp B, Amp B will now operate exactly like Amp A did. However, if you take the MIDI pedal from Amp B and plug it into Amp A, it will NOT operate like Amp B because those MIDI presets are stored inside Amp B itself. And finally, if we take the factory default-setting footswitch from B and plug it into A, Amp A now will operate according to the factory defaults (until we plug its original "A" footswitch back in, at which point it will again operate as the user had programmed it).

The factory reset would clear the footswitch from the footswitch-related presets, and clear the amp of all MIDI presets. So, I think you had it pretty well figured out already.

Dark Horse wrote:As I remember, the footswitch stores all the footswitch-related presets, not the amp. The amp only stores MIDI presets.

Picture two JVMs, "A" and "B". Amp A is programmed only for footswitch presets(no MIDI programs ever put in), Amp B is only operated with a MIDI pedal and still has the factory default presets in its factory footswitch (which isn't used). Now if you take the footswitch from Amp A and hook it up to Amp B, Amp B will now operate exactly like Amp A did. However, if you take the MIDI pedal from Amp B and plug it into Amp A, it will NOT operate like Amp B because those MIDI presets are stored inside Amp B itself. And finally, if we take the factory default-setting footswitch from B and plug it into A, Amp A now will operate according to the factory defaults (until we plug its original "A" footswitch back in, at which point it will again operate as the user had programmed it).

The factory reset would clear the footswitch from the footswitch-related presets, and clear the amp of all MIDI presets. So, I think you had it pretty well figured out already.

Yes that all makes sense to me. Thanks

Up until now I've not been using this amp very practically/efficiently. I've just been working with the footswitch as default and "cycling" for the modes I want. Looking to setting the footswitch to what I use now. Its awesome - I'm using button six for reverb on/off then I can effectively have 5 sounds set and ready to go. Love this amp!

AndySpain wrote:This thread has been merged with the existing sticky for completeness ...

Dark Horse wrote:As I remember, the footswitch stores all the footswitch-related presets, not the amp. The amp only stores MIDI presets.

Picture two JVMs, "A" and "B". Amp A is programmed only for footswitch presets(no MIDI programs ever put in), Amp B is only operated with a MIDI pedal and still has the factory default presets in its factory footswitch (which isn't used). Now if you take the footswitch from Amp A and hook it up to Amp B, Amp B will now operate exactly like Amp A did. However, if you take the MIDI pedal from Amp B and plug it into Amp A, it will NOT operate like Amp B because those MIDI presets are stored inside Amp B itself. And finally, if we take the factory default-setting footswitch from B and plug it into A, Amp A now will operate according to the factory defaults (until we plug its original "A" footswitch back in, at which point it will again operate as the user had programmed it).

The factory reset would clear the footswitch from the footswitch-related presets, and clear the amp of all MIDI presets. So, I think you had it pretty well figured out already.

Yes that all makes sense to me. Thanks

Up until now I've not been using this amp very practically/efficiently. I've just been working with the footswitch as default and "cycling" for the modes I want. Looking to setting the footswitch to what I use now. Its awesome - I'm using button six for reverb on/off then I can effectively have 5 sounds set and ready to go. Love this amp!

AndySpain wrote:This thread has been merged with the existing sticky for completeness ...

the factory reset clears the amplifier memory. That includes the memorised channel settings (for example clean red+reverb+FX) AND the midi memory.

THe footswitch presets and assignments are stored in the footswitch so it is perfectly possible to recall the same channel configurations in different JVMs using a single footswitch.

The reset has few purposes:
-to avoid having to reprogram MIDI presets/clear the internal channel setting
-as a "safety" measure in case of some weird and highly improbably glitch affects the controller memory. As far as I know it hasn't happened in the more than 3 years the amp is in production. We also still use the very first software revision which highlights ow reliable the switching and control program has been. Other manufacturers using microcontrollers keep updating and reprogramming amps ;-)
-for production purposes so the amplifier is shipped "clean" and "ready" after passing all the factory tests which also involve programming and storing things.

I am curious, that means there must be a cadmium batterey in there somewhere to hold the settings when its turned off. That only has about a three year shelf life. Usually shiny round like a quarter Chrome and knowing marshall probably one of those plastic push in receptacles soldered to the board. I was Curious on how to reset the head, thanks. Got to dig into that manual more.

terrencerocks wrote:I am curious, that means there must be a cadmium batterey in there somewhere to hold the settings when its turned off. That only has about a three year shelf life. Usually shiny round like a quarter Chrome and knowing marshall probably one of those plastic push in receptacles soldered to the board. I was Curious on how to reset the head, thanks. Got to dig into that manual more.

I had problems with the mode lights not functioning properly and the factory reset cleared that problem up for me, maybe it was a midi glitch, I don’t know. I don’t use a midi controller. But it’s been a few months and a little wear and tear on the amp(JVM410H)and the problem has not come back.